Add new features to github workflow

[Z4RD0Z]

This pull request introduces automated release packaging and enhances documentation regarding project dependencies and security. The main changes include adding a release archive and checksum generation to the GitHub Actions workflow, and updating the documentation to reflect the inclusion and use of DOMPurify for HTML sanitization.

Release automation:

• Added steps in .github/workflows/release-on-merge.yml to create a zip archive of the release files and generate a SHA256 checksum, which are then attached to the GitHub release.

Documentation updates:

• Updated readme.md to list purify.min.js (DOMPurify) as a bundled dependency in the project structure section.
• Expanded the documentation to describe DOMPurify as a dependency, detailing its purpose and usage for sanitizing all user-facing HTML to prevent XSS vulnerabilities.
• Added a new "Security" section to the documentation specifying the allowed HTML tags and attributes for different content contexts, further clarifying the security model.

Fix

• Update release version.